That's fine, blow a Tesla's doors off instead! And/or hit the drag strip! Booster Style: Annular. • For 850, 950, 1000, and 1050 1-3/4 bore carburetors. Booster Size.600. Quick Fuel Technology's Q-series are Holley's highest flowing main bodies with recessed air bleed cavities and precisely shaped venturi for outstanding throttle response.